Alright! The plot seems to display expected behavior when plotting two pvs and both pvs have custom limits defined (ie SR1 Current displayed between 150-250 and dxp1607-B21-04:mca1.R0 displayed between -1 - 1). The user can specify custom limits through the Edit PV Dialog. When only one pv has custom limits defined, the dxp pv appears to 'wander' up and down the y axis, which is not desirable. I haven't figured out exactly why this is yet. Project builds and runs.